Test A
PINPOINT TEST A: THE AIR BAG WARNING INDICATOR IS ILLUMINATED CONTINUOUSLY - RCM DISCONNECTED OR INOPERATIVE, LOSS OF BATTERY FEED, OR LOSS OF SIGNAL GROUNDTest A1-A3:
Test A3-A5:
Test A5-A6:
Test A7:
Normal Operation
During normal operation, the air bag indicator will illuminate continuously for approximately 6 seconds and then go out after the ignition switch is placed in the ON or START position and no air bag faults exist. The air bag indicator will remain illuminated continuously after three cycles of a lamp fault code (LFC), if a fault exists.Be sure to cycle the ignition switch and look for an approximate 6 second indicator prove-out without LFCs.
The restraints control module (RCM) will communicate diagnostic trouble codes (DTCs) to the scan tool using the data link connector (DLC). If the scan tool displays NO COMMUNICATION when retrieving continuous DTCs, GO to Pinpoint Test W to troubleshoot the system. Test W
Possible Causes
An air bag indicator that is illuminated continuously could be caused by one of the following:
- faulted ignition circuit.
- RCM disconnected from the vehicle harness.
- a loss of RCM signal ground.
- faulted wiring, terminals, or connectors.
- faulted instrument cluster module.
- a faulted RCM.